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当前位置: 首页 > 文章 > Rhizosphere soil bacterial community composition in soybean genotypes and feedback to soil P availability 农业科学学报 (英文) 2019,18 (10)
Position: Home > Articles > Rhizosphere soil bacterial community composition in soybean genotypes and feedback to soil P availability Journal of Integrative Agriculture 2019,18 (10)

Rhizosphere soil bacterial community composition in soybean genotypes and feedback to soil P availability

作  者：
Zhou Tao;Wang Li;Du Yong-li;Liu Ting;Li Shu-xian;Gao Yang;Liu Wei-guo;Yang Wen-yu
单  位：
Sichuan Agr Univ, Coll Agron, Chengdu 611130, Sichuan, Peoples R China;Minist Agr, Key Lab Crop Ecophysiol & Farming Syst Southwest, Chengdu 611130, Sichuan, Peoples R China
关键词：
soybean;low P;rhizosphere;bacterial community;soil P availability
摘  要：
Soil with low phosphorus (P) availability and organic matter contents exists in large area of southwest of China, but some soybean genotypes still show well adaptations to this low yield farmland. However, to date, the underlying mechanisms of how soybean regulates soil P availability still remains unclear, like microbe-induced changes. The objective of the present study was to compare the differences of rhizosphere bacterial community composition between E311 and E109 in P-sufficiency (10.2 mg kg(-1)) and P-insufficiency (5.5 mg kg(-1)), respectively, which then feedback to soil P availability. In P-sufficiency, significant differences of the bacterial community composition were observed, with fast-growth bacterial phylum Proteobacteria, genus Dechloromonas, Pseudomonas, Massilia, and Propionibacterium that showed greater relative abundances in E311 compared to E109, while in P-insufficiency were not. A similar result was obtained that E311 and E109 were clustered together in P-insufficiency rather than in P-sufficiency by using principal component analysis and hierarchical clustering analysis. The quadratic relationships between bacterial diversity and soil P availability in rhizosphere were analyzed, confirming that bacterial diversity enhanced the soil P availability. Moreover, the high abundance of Pseudomonas and Massilia in the rhizosphere of E311 might increased the P availability. In the present study, the soybean E311 showed capability of shaping rhizosphere bacterial diversity, and subsequently, increasing soil P availability. This study provided a strategy for rhizosphere management through soybean genotype selection and breeding to increase P use efficiency, or upgrade middle or low yield farmland.

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